WO2011147214A1

WO2011147214A1 - Control method of video monitor array, device and system thereof

Info

Publication number: WO2011147214A1
Application number: PCT/CN2011/071281
Authority: WO
Inventors: 肖丹
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-05-27
Filing date: 2011-02-24
Publication date: 2011-12-01
Also published as: CN102263932A

Abstract

A control method of video monitor array, a device and a system thereof are provided. The control method includes: Whether a target object appears in a monitoring area is monitored. When the target object appears, the area number of the target object is determined according to the preset monitoring area information. A camera corresponding to the area is turned on to capture a video image for the target object according to the area number of the target object. By dividing the monitoring area and collectively managing multiple camera devices, the control method, device and system enable not only the rapid finding of the target object and the clear capture of the video image of the target object,, but also the continuous tracking of the target object, thereby further improving the quality of video monitoring.

Description

Method, device and system for video surveillance array control

The present invention relates to the field of communications technologies, and in particular, to a method, device, and system for controlling a video surveillance array. Background technique

With the rapid development of video surveillance technology, technologies such as motion detection, intelligent tracking, dual stream output, network storage, and high-definition surveillance have gradually matured and have been widely used. Especially in some important applications, such as the Safe City project, the Olympic Games, and the World Expo, it has played a vital role.

Existing video surveillance systems can be monitored with a single camera or multiple cameras. In the monitoring of a single camera, the field of view and the focal length are a pair of contradictory factors. If you want to see a wide range, it is best to use a wide-angle lens. To clearly see distant objects, it is best to use a telephoto lens. The use of a lens with a large zoom ratio inevitably increases the cost. In the monitoring of multi-cameras, most of the lens deployment and control are relatively independent and need to be separately controlled, so the advantages of multi-cameras cannot be exploited when searching for monitoring targets and intelligent tracking processing.

How to quickly find the monitoring target, how to clearly display the monitoring target (such as face, license plate, etc.), how to continuously track the monitoring target and so on has always been the focus of video surveillance system design. Summary of the invention

The main object of the present invention is to provide a method, device and system for controlling a video surveillance array, aiming at improving the quality of video surveillance.

The invention provides a method for controlling a video surveillance array, comprising the following steps: Monitoring whether there is a target object in the monitoring area. When a target object appears, the number of the area where the target object is located is determined according to the preset monitoring area information;

According to the number of the area where the target object is located, the corresponding image capturing device of the area is called to perform video image collection on the target object.

Preferably, after the step of calling the video image of the target object by the corresponding image capturing device according to the number of the region where the target object is located, the method further includes:

Monitor whether the target object is close to the boundary of the area in which it is located;

When the target object approaches the boundary of the region in which it is located, the number of the adjacent region on the predicted path of the target object is determined;

According to the number of the adjacent area on the predicted path of the target object, the camera corresponding to the adjacent area is called to perform video image collection on the target object.

Preferably, the step of calling the corresponding camera device to perform video image collection on the target object according to the number of the region where the target object is located is specifically:

Query the corresponding preset index according to the number of the area where the target object is located;

The preset index is sent to the corresponding camera device, and the camera device is called to perform video image collection on the target object.

Preferably, whether the target object appears in the monitoring monitoring area, and when the target object is present, determining the number of the area where the target object is located according to the preset monitoring area information includes:

The monitoring area is divided into a plurality of small areas, and the small areas are numbered, and the camera device is allocated to the small area, and recorded as preset monitoring area information;

The area calibration is performed on the camera separately, and recorded as a preset index.

The invention provides a control device for a video surveillance array, comprising:

a monitoring unit, configured to monitor whether a target object appears in the monitoring area, and when a target object appears, determine a number of the area where the target object is located according to the preset monitoring area information; The processing unit is configured to call the corresponding camera device in the region to perform video image collection according to the number of the region where the target object is located.

Preferably, the monitoring unit is further configured to monitor whether the target object is close to a boundary of the area; when the target object approaches the boundary of the area, determine the number of the adjacent area on the predicted path of the target object;

The processing unit is further configured to call the camera corresponding to the adjacent area to perform video image collection on the target object according to the number of the adjacent area on the predicted path of the target object.

Preferably, the processing unit includes:

The query unit is configured to query the corresponding preset index according to the number of the area where the target object is located;

The calling unit sends the preset index to the corresponding camera device, and invokes the camera to perform video image collection on the target object.

Preferably, the above control device further includes:

The area dividing unit is configured to divide the monitoring area into a plurality of small areas, and number the small areas, and allocate the camera device to the small area, and record the information as the preset monitoring area;

The area calibration unit is used to separately calibrate the camera and record it as a preset index.

The invention also provides a control system for a video surveillance array, comprising:

a camera device for collecting video images;

The control device of the video surveillance array is connected to the camera device, and includes:

a monitoring unit, configured to monitor whether a target object appears in the monitoring area, and when a target object appears, determine the number of the area where the target object is located according to the preset monitoring area information;

The processing unit is configured to call the corresponding camera device in the region to perform video image collection according to the number of the region where the target object is located.

Preferably, the monitoring unit is further configured to monitor whether the target object is close to a boundary of the area where the target is located; When the target object approaches the boundary of the region in which it is located, the number of the adjacent region on the predicted path of the target object is determined;

The control method, device and system of the video surveillance array of the invention divides the monitoring area and centrally manages a plurality of camera devices, not only can quickly find the target object, clearly collect the video image of the target object, and can target the target object. Continuous tracking has further improved the quality of video surveillance. DRAWINGS

1 is a schematic structural diagram of an embodiment of a control system for a video surveillance array according to the present invention; FIG. 2 is a schematic structural diagram of an embodiment of a control device for a video surveillance array according to the present invention;

4 is a schematic diagram of the control device of the video surveillance array of the present invention controlling the corresponding movable camera device to be positioned to the area 1;

5 is a schematic diagram of the control device of the video surveillance array of the present invention controlling the corresponding movable camera device to be positioned to the area 2;

6 is a schematic diagram of the control device of the video surveillance array of the present invention controlling the corresponding movable camera device to be positioned to the area 3;

FIG. 7 is a schematic flowchart of a method for controlling a video surveillance array according to an embodiment of the present invention; FIG. 8 is a flowchart of a step of calling a camera device corresponding to a region to perform video image collection according to the number of the region where the target object is located in the above embodiment. schematic diagram. detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The invention first collects a video image of a main area of a monitoring area by a fixed wide-angle camera, and divides the video image into M x N small areas and numbers them, for example, area 1, area 2, area 3, and the like. Wait. Secondly, by setting a plurality of movable imaging devices, video images are collected for small areas. The video images collected by all the cameras are input to the control device of the video monitoring array. When the control device of the video surveillance array detects that the target object appears, the video image is collected.

The number of M X N above can be freely configured according to different scenarios, such as a 3 x 4 video surveillance array. The main picture is divided into 12 small areas. Moreover, the small area corresponding to the imaging device can be freely configured as needed. For example, one camera device may be assigned to each small area, or one camera device may be assigned to a plurality of small areas, and a plurality of camera units may be allocated for each small area. It should be noted here that when a plurality of small areas are assigned one imaging device, the imaging device has a function of being positionable at a rotation angle, and can be rotated to a designated position as needed.

In order to ensure that the movable camera collects clear video images, it is also necessary to perform area calibration on the movable camera. For example, by rotating and zooming the movable image pickup device, the video image collected by the movable image pickup device is superimposed on the screen of a certain small area, and the preset position index is recorded. The preset index can be stored in the control device of the video surveillance array, and the movable camera receives the preset index sent by the control device of the video surveillance array, and quickly locates the predetermined position according to the preset index. The preset index can also be stored in the movable camera, and the movable camera can call the corresponding preset index according to the control of the control device 200 of the video monitoring array, and quickly locate the predetermined according to the preset index. position.

The area calibration of the above movable imaging device can be manually adjusted, or the positioning data of the obtained area can be calculated based on the actual position and distance of the fixed imaging device and the movable imaging device, and the movable imaging device can be controlled to perform automatic calibration.

1 is a schematic structural view of an embodiment of a control system for a video surveillance array of the present invention. The control system of the video surveillance array of this embodiment includes:

The camera device 100 is configured to collect video images;

The control device 200 of the video surveillance array is connected to the camera device 100 and configured to monitor whether a target object appears in the monitoring area. When a target object appears, the number of the area where the target object is located is determined according to the preset monitoring area information; According to the number of the region where the target object is located, the imaging device 100 corresponding to the region in which the region is located is called to perform video image collection.

The image pickup apparatus 100 described above includes a fixed image pickup device 101 and a movable image pickup device 102. The fixed imaging device 101 is a wide-angle lens that can capture video images of the surveillance area. The video image of the monitoring area is divided into M x N small areas, and the area number is assigned thereto, and then the corresponding relationship between the movable imaging apparatus 102 and the small area is allocated as needed, and recorded as preset monitoring area information, and stored in the video. The control device 200 of the array is monitored.

The control device 200 of the video surveillance array can monitor whether the video image of the monitoring area has a target object. If yes, the number of the area where the target object is located is determined according to the preset monitoring area information, and the movable camera device 102 corresponding to the number of the area is called. Perform a collection of video images. Moreover, when it is detected that the target object moves and approaches the boundary of the region, the number of the adjacent region on the predicted path of the target object is determined, and the movable camera device 102 corresponding to the adjacent region is called to perform the video image collection. .

In this embodiment, the camera device corresponding to each small area in the monitoring area is centrally managed, and the target object can be quickly found, the video image of the target object can be clearly collected, and the target object can be continuously tracked, thereby further improving the video. The quality of monitoring.

2 is a schematic structural view of an embodiment of a control device for a video surveillance array according to the present invention.

The control device 200 of the video surveillance array of this embodiment includes:

The area dividing unit 21 is configured to divide the monitoring area into a plurality of small areas, and number the small areas, and allocate the camera device to the small area, and record the information as the preset monitoring area;

The area calibration unit 22 is configured to perform area calibration on the camera separately, and record as a preset position. Index

The monitoring unit 23 is configured to monitor whether a target object appears in the monitoring area, and when a target object appears, determine the number of the area where the target object is located according to the preset monitoring area information;

The processing unit 24 is configured to call the corresponding image capturing device according to the number of the region where the target object is located to perform video image collection.

The monitoring unit 23 can also be configured to receive the area information sent by the client, and determine the number of the area where the target object is located according to the area information.

The monitoring unit 23 is further configured to monitor whether the target object is close to the boundary of the region; when the target object approaches the boundary of the region, determine the number of the adjacent region on the predicted path of the target object;

The processing unit 24 is further configured to call the camera corresponding to the adjacent area to perform video image collection on the target object according to the number of the adjacent area on the predicted path of the target object.

Referring to FIG. 3, the processing unit 24 specifically includes:

The query unit 241 is configured to query the corresponding preset index according to the number of the area where the target object is located;

The calling unit 242 sends the preset bit index to the corresponding camera device, and calls the camera device to perform video image collection on the target object.

The query unit 241 is further configured to query the corresponding preset index according to the number of the adjacent area on the predicted path of the target object. The calling unit 242 sends the preset bit index to the corresponding camera device, and calls the camera device to perform video image collection on the target object.

The operation of the control device of the video surveillance array will be specifically described below by taking a fixed camera C1 and two movable cameras C2 and C3 as examples. Wherein, the movable camera C2 C3 has the function of positioning by rotation angle.

As shown in Fig. 4, the video image of the monitoring area is collected by the fixed camera C1, and the video image is divided into four areas, namely, area 1, area 2, area 3, and area 4. The movable imaging device C2 is used to collect the video images of the area 1 and the area 2, and the movable imaging device C3 is used to collect the video images of the area 3 and the area 4. Further, the correspondence between the movable imaging devices C2, C3 and the area 1, the area 2, the area 3, and the area 4 is stored as preset monitoring area information in the control device 200 of the video monitoring array.

First, area calibration is performed on the movable imaging device C2 and the movable imaging device C3. The movable imaging device C2 firstly rotates, zooms, etc., so that the first preset position of the movable imaging device is the area 1, and the first preset position index is recorded; and then the operation is performed by rotating, zooming, etc. The second preset position of the camera C2 is area 2, and the second preset index is recorded. The movable imaging device C3 firstly rotates, zooms, etc., so that the first preset position of the movable imaging device C3 is the area 3, and the third preset position index is recorded; and then the operation is performed by rotating, zooming, etc. The second preset position of the camera C3 is the area 4, and the fourth preset index is recorded. The first preset index, the second preset index, the third preset index, and the fourth preset index are stored in the control device 200 of the video monitoring array.

Secondly, when the control device 200 of the video surveillance array detects that a target object appears in the monitoring area, the number of the area where the target object is located is determined according to the preset monitoring area information, and the video monitoring array is assumed to be the area 1 The control device 200 transmits a corresponding preset bit index (ie, the first preset bit index) to the corresponding camera device (ie, the camera device C2). The movable camera C2 is quickly positioned to the area 1 according to the preset index, as shown in FIG.

Again, when the control device 200 of the video surveillance array detects that the target object has moved and approaches the boundary of the region 1, the number of the adjacent region on the predicted path of the target object is determined, for example, region 2. Then, the control device 200 of the video surveillance array queries the corresponding preset bit index as the second preset index according to the preset area control information, and sends the second preset index to the The movable imaging device C2. The movable camera C2 quickly locates to the area 2 according to the second preset index, as shown in FIG. When the control device 200 of the video surveillance array detects that the target object has moved and approaches the boundary of the region 2, the number of the adjacent region on the predicted path of the target object, such as region 3, is determined. Then, the control device 200 of the video surveillance array transmits a corresponding preset bit index (ie, a third preset bit index) to the corresponding camera device (ie, the camera device C3). The movable camera C3 is quickly positioned to the area 3 according to the third preset index, as shown in FIG. 6.

FIG. 7 is a schematic flow chart of an embodiment of a method for controlling a video surveillance array according to the present invention.

The control method of the video surveillance array of this embodiment includes the following steps:

Step S10: The monitoring area is divided into a plurality of small areas, and the small areas are numbered, and the imaging device is allocated to the small area, and recorded as preset monitoring area information;

The video image of the monitoring area is collected by the fixed camera 101, and then the video image of the monitoring area is divided into M x N small areas, and the area number is assigned thereto, and then the movable image capturing apparatus 102 is allocated to the small area as needed. For preset monitoring area information.

Step Sl l, respectively perform area calibration on the camera, and record as a preset index.

In order to ensure that the movable camera collects clear video images, it is also necessary to perform area calibration on the movable camera. For example, by rotating and zooming the movable image pickup device, the video image collected by the movable image pickup device is superimposed on the screen of a certain small area, and the preset index number is recorded.

Step S12: monitoring whether a target object appears in the monitoring area, and when a target object appears, determining a number of the area where the target object is located according to the preset monitoring area information;

Step S13: Calling the camera device corresponding to the area in which the target object is located to perform video image collection.

Referring to Figure 8, step S13 further includes:

Step S131: Query a corresponding preset index according to the number of the area where the target object is located; Step S132: Send the preset bit index to the corresponding camera device, and call the camera device to perform video image collection on the target object.

Step S13 includes:

Step S14: monitoring whether the target object is close to the boundary of the area;

Step S15: When the target object approaches the boundary of the area, determine the number of the adjacent area on the predicted path of the target object;

Step S16: Calling an image capturing device corresponding to the adjacent region to perform video image collection on the target object according to the number of the adjacent region on the predicted path of the target object.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent flow transformation made by the specification and the drawings of the present invention may be directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Claims

Claim

A method for controlling a video surveillance array, characterized in that the method comprises the following steps:

Monitoring whether there is a target object in the monitoring area. When a target object appears, determine the number of the area where the target object is located according to the preset monitoring area information;

The method for controlling a video surveillance array according to claim 1, wherein the step of calling the image capturing device corresponding to the region to perform the video image collection on the target object according to the number of the region where the target object is located is further Includes:

The method for controlling a video surveillance array according to claim 1 or 2, wherein the step of calling the corresponding camera to perform video image collection on the target object according to the number of the region where the target object is located is specifically :

The preset bit index is sent to a corresponding camera device, and the camera device is called to perform video image collection on the target object.

The method for controlling a video surveillance array according to claim 3, wherein: whether the target object appears in the monitoring monitoring area, and when the target object appears, determining the target object according to the preset monitoring area information The steps for numbering the area include:

Divide the monitoring area into multiple small areas, number the small areas, and assign small areas The camera device is recorded as preset monitoring area information;

A control device for a video surveillance array, the device comprising: a monitoring unit, configured to monitor whether a target object appears in the monitoring area, and when a target object appears, determine according to the preset monitoring area information. The number of the area where the target object is located;

The control device for the video surveillance array according to claim 5, wherein the monitoring unit is further configured to monitor whether the target object is close to a boundary of the region; and when the target object approaches the boundary of the region, determine the target object. The number of the adjacent area on the predicted path; the processing unit is further configured to call the camera corresponding to the adjacent area to perform video image collection on the target object according to the number of the adjacent area on the predicted path of the target object.

7. The control device for a video surveillance array according to claim 6, wherein the processing unit comprises:

The calling unit sends the preset bit index to the corresponding camera device, and invokes the camera device to perform video image collection on the target object.

The control device of the video surveillance array according to claim 7, wherein the control device further comprises:

9. A control system for a video surveillance array, the system comprising: The control device of the video surveillance array is connected to the camera device, and includes:

The control system of the video surveillance array according to claim 9, wherein the monitoring unit is further configured to monitor whether the target object is close to a boundary of the region; and when the target object approaches the boundary of the region, determine the target object. The number of the adjacent area on the predicted path; the processing unit is further configured to call the camera corresponding to the adjacent area to perform video image collection on the target object according to the number of the adjacent area on the predicted path of the target object.